Fuel feed controlling means for internal combustion engines



Sept 15, 1931. o. D. TREIBER 1,823,713

FUEL FEED coNTEoLmNG NEANs EOE INTERNAL coNEusTIoN ENGINES Filed sept. 15. 192'1r l 16 45 l y n I 4 0 o @1901 a :l 17 I 'l 19 @QL/g' 2 /1 VENTO/e .(9154 '6. JM

A TTORNEY Patented sepais, 1931 UNITED STATES PATENT OFFICE OTIS D. TREIBER, 0F COLLIN GSWOOD, NEW JERSEY, ASSIGNOR T0 TREIBER DIESEL ENGINE CORPORATION, OF CAMDEN, NEW JERSEY, A CORPORATION F NEW JERSEY FUEL FEED CONTROLLING MEANS FOR INTERNAL COMBUSTION ENGINES Application filedv September 13, 1927. Serial No. 219,257.

My invention relates broadly to internal combustion engines of the Diesel type, but

more particularly to t-he means for controlling the feed of fuel thereto.

It is desirable in the operation of a multicylinder internal combustion engine structure thatlan equal amount of fuel be fed to each cylinder in order that the power generated in the respective cylinders shall be the same. It may happen, because of one reason or another, thatdilferent amounts of fuel may be delivered to different cylinders, which would be objectionable.

The fuel' feed controlling means employed in engine structures of the character under consideration includes lost motion mechanism or devices, and it is the object of the invention to provide means whereby any one of a plurality of the lost motion controlling means of such devices may beadjusted independently of the other of said devices whereby the period of feeding of fuel to the respective cylinders may be controlled. By means of this control it is practical to deliver an equal amount of fuel to each of the cylinders.- n

It also is an object of the invention to provide means of novel construction for adjusting the adjustable devices of the respective fuel feed control devices or mechanisms of a multi-cylinder internal ycombustion engine structure.

To these and other ends the invention comprehends the construction as hereinafter described. as illustrated in the drawings, and particularly pointed o ut in the claims. It will be understood that the invention is susceptible of embodiment in other forms of construct-ion than that shown and that changes in the details of construction may be made within the scope ofthe claims without departing from the invention or the prin` ciple thereof.

In the drawings:

Fig. 1 is a view in vertical sectionpof an internal combustion engine provided with fuel feed controlling means embodying the invention:

Fig. 2 is a view in sectional elevation of the mechanism illustrated in Fig. 1 embodying the invention;

Fig. 3 is a horizontal sectional view taken on the line 3 3 of Fig. 2; Fig. 4 is a transverse sectional viewtaken `of the adjusting devices or mechanisms embodying the invention; and

Fig. 6 is a view in perspective showing a Y portion of the fuel feed controlling means comprising a plurality of devices embodying the invention.

In the drawings I have shown an internal combustion engine structure comprising the usual crankshaft casing 1, engine cylinder 2, piston 3, connecting rod 4, crank shaft 5 and cylinder head 6. In the construction as illustrated fuel is supplied through spray nozzles 7 and to the latter through pipes 8 having connection with a supply o f fuel under constant pressure. However, it will be understood that fuel may be supplied to the respective engine cylinders by means of a force pump, in known manner.

rI`he spray nozzle is provided with small openings at its lower end which are adapted to beopened and closed b v means of a. valve, not shownI` having connection with or being part of a stern the* upper end ofwhich is shown at 10. The stem 10 is adapted to be lifted to open the valve to permit discharge of fuel from the spray nozzle by means of a lever 15 pivoted at one end upon a stationary pivot at 16 and connected at its opposite end to the. upper end of a rod 17 which terminates at its lower end in an enlargement or head 18 supported and guided in and b v a stationary guide 19 in known manner. The rod 17 is in alinement with a section of rod 20 supported and guided in and by the guide 21. The opposing adjoining ends of the terminal head portion 18 and of the rod 20 are spaced from each other as illustrated. The rods 17 and 20 combined may be regarded as the actuating rod of the feeding means. The lower end of the section of rod A20 is provided with a roller Y,

which rests upon a cam disk 22 and is actuated at intervals by a raised cam projection 23 thereon. lThe number of cam disks and actuating rods is dependent upon the number '.of engine cylinders to which fuel is to be supplied. All of the cam disks are mounted upon a cam shaft 25 rotation of which is effected by means of gears 26 and 27, the former being mounted upon the cam shaft and the latter upon the crank shaft 5.

The fuel feed controlling means for each cylinder includes a lost motion controlling device. Each of these devices consists of an arm 30 adjustably mounted upon a rock shaft 31. In the construction as illustrated I have provided an arm or handle 32 which. is mounted upon and secured to said rock shaft, which arm or handle is located in cooperative relation to a quadrant 33 which is s'upported at one end upon a stationary bracket 34 Within or upon which is provided one of the bearings for the rock shaft 31. The handle 32 is provided with-a spring pressed catch 36 which is adapted to engage notches 37 in the outer or convex edge of the quadrant 33 to hold the said handle and the rock shaft 31 in any position to which they may be adjusted.

The arm 30 is provided upon its upper end with a short tubular section 40 within which is mounted an adjustable and slidable plug 41. Adjustment of the ,plug 41 may be effected by means of a spindle 42 journaled in a thrust bearing 43 mounted in the outer end of the tubular section 40 and secured therein by one or more screws 44 which also operate to fasten a spring catch 45 to the said tubular bearing. The portion of the spindle 42 mounted within the bearing 43 is smooth, as shown, so that rotation thereof in its bearing may be effected without causing the said spindle to move in one direction or the other. The spindle is provided lupon its outer end with a finger piece or Wheel 46 by means of which it may be rotated. The inner side of the said linger piece is provided with a plurallty or series of depressions 50 which are adapted to be engaged by a projection 51 upon the spring 45 and thereby held in any position to which it may be adjusted. The inner end portion of the spindle 42 is screw threaded and is in engagement with a screw threaded central opening 52 in the plug or block 41 previously referred to. The spindle is provided with binding nuts 53 upon the inner side of the thrust bearing 43. T hese binding nuts co-act with the linger piece or wheel 46 to prevent longitudinal or axial movement of the spindle 42 with respect to the said lbearing. Upon rotating the spindle 42 in one direction or the other movement of the plug or block 41 axially of the tubular section 40 is effected. Rotation of the plug or block 41 with the spindle is prevented by means of afscrew 56 mounted in a screw threaded opening in the tubular section 40, the inner end of said screw entering .der than may be fed to other cylinders.

a slot 57 in a side of the plug or block 41. The plug or block 41 is provided with a slot, as indicated at 58, into which slot the outer or front end of a wedge 60 extends. The wedge is pivotally connected to the said block by means of a pivot 61 which extends transversely of the slot 58. The wedge 60 extends between the opposing adjoining ends of the rod 17 and the section of rod 20. By adjusting the wedge 60'inwardly or outwardly the lost motion between the sections 2() and 17 of the valve actuatin rod is varied. Obviously such lost motion may be increased or diminished.

Ordinarily the wedges 60 will be so located and positioned that the amount of lost motion between the opposing adjoining ends of the sections 17 and 20 will be the same. It will be understood that the wedges 60 may be Withdrawn to such an extent that the amount of lost motion is so great that the section 20 may be actuated by the cam projection 23 Without causing actuation of the section 17 of the feed actuating rod.

If in the operation of a lmulti-cylinder internal combustion engine structure it be found that the amou'ht of liquid fuel which is delivered at each fuel discharge operation to a cylinder is greater or less than that which is* being delivered to other cylinders the inder may be adjusted in a direction to de-,

crease or increase the period of fuel delivery to that particular cylinder so as to effect delivery thereto of an amount of fuel equal to that delivered tothe other Ycylinders of the structure.

It may happen, for instance, that the openings at the discharge end of the spray nozzle for supplying fuel to one of the cylinders may become clogged, thereby retarding the discharge of fuel therefrom, resulting in the feeding of less fuel to that particular cyliInn that event, the valve for controlling the said openings should be maintained in open position for a longer period in order that an equal amount of fuel may be delivered thereto. This may be accomplished by ad'usting the wedge 60 constituting a part o the fuel feed controlling mechanism for that particular cylinder inwardly so as to `decrease the amount of lost motion between the parts 17 and 20. Upon adjustment of a wedge 60 inwardly so' as to decrease the i ywith other cylinders an would be retained in open position for a longer period, which period would depend upon the amount of in ward adjustment of the wedge 60.

If, on the other hand, it should be found ciated with that particular cylinder should be adjustedv outwardly to thereby increase the amount of lost mot-ion betweenthe parts 17 and 20.

It will be seen that by my invention I have provided means whereby all of the wedges 60 for controlling `the lost motion of the fuel feed controlling and actuating means may be moved inwardly and outwardly simultaneously, and also means whereby any one of the said wedges may be adjusted inwardly or outwardly independently of any vone or all of the others.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

l. In means for controlling the feed of fuel to the cylinders of a multi-cylinder internal combustion engine structure, the combination of lost motion connecting means having connection with the feeding means of the said cylinders, means for actuating the said connecting means, a rock shaft, a plurality of devices mounted uponthe said rock shaft adapted to be adjusted simultaneously toward and from the said connecting means for varying the action thereof upon the feeding means, and means upon each of the said devices for adjusting the lost motion controlling means thereof independently of the other of said devices. e

2. In means for controlling the feed of fuel to the cylinders of multi-cylinder internal combustion engine structure, the combination of fuel feeding means, a plurality of cams, connecting rods each colnprising a plurality of parts interposed between said cams and said feeding means, the adjoining ends of said parts being spaced froml each other, a plurality of Wedges interposed between the said parts, means for simultaneously adjusting said wedges between and transversely of said parts, and means for adjusting any one of said wedges between and transversely of said parts independently of the others.

3. In means for controlling the feed of liquid fuel to the cylinders of a multi-cylinder internal combustion engine structure, the

y combination of feeding means for each cylinder', a cam sha-ft having a plurality of cams thereon, lost motion actuating means interposed between the said cams and the said feeding means, a plurality of devices for varying the amount of lost motion of the said actuating means, means for simultaneously adjusting the said lost motion varying devices with respect to the said actuating means, and means whereby any one of the said lostl motion varying devices may be adjusted independently of the other of saidl devices. a

4. In means for controlling the feed of liquid fuel to the cylinders of a multi-cylinder internal combustion engine structure, the combination of feeding means associated with each cylinder, a rotatable cam shaft having a plurality of cams thereon, a multipart actuating connecting means between the respective cams and feeding means, the said parts being separated from each other whereby lost motion is adapted to result upon the actuation of one of the said partsA Vby the said cams, wedges located between said parts for taking up the lost motion movements thereof, means for adjusting said wedges simultaneously transversely of and between said parts, and means for adjusting any one of said wedges independently of the other wedges.

5. In means for controlling the feed of liquid fuel to the cylinders of a multi-cylinder internal combustion` engine structure, the combination of feeding vmeans associated with each cylinder, a rotatable cam shaft having thereon a plurality of cams, a multipart actuating means interposed between the respective cams and feeding means, the adjoining opposing ends of said parts being separated from each other, Wedges interposed between said parts, a rock shaft, arms mounted thereon, means for connecting the outer vends of said wedges to said arms, and means for adjusting any one of said wedfres inwardly or outwardly independently of t e other wedges.

6. In means for controlling the feed of 'be'r mounted within said tubular portion to which the outer end of said Wedge is pivotally connected, and means for eifectin adjustment of the said member axially o the said tubular portion to effect corresponding adjustment of the said Wedge withrespect to the said parts.

7. In means for controlling the feed lof liquid fuel to the cylinders of a multi-cylinder internal combustion engine structure, the combination of feeding means associated with each cylinder, a cam shaft having a plurality of cams thereon, lost motion actuating means interposed betweenthe said cams and the said feeding means, a rock shaft having a plurality of arms mounted thereon, means for effecting rocking motion off the said shaft and of the arms mounted thereon,

said arms terminating at their outer ends with tubular portions, members slidably mounted within said portions, means for adjusting the said -members inwardly and outwardly within said portions, and lost motion controlling devices having connection with the said members and proJecting transversely of the said lost motion actuating means for varying the amount of lost motion thereof.

8. In means for controlling the feed of liquid fuel to the cylinder of an internal combustion engine structure, the combination of actuating means having connection with the fuel feeding means of said cylinder, said actuating meanscomprising a plurality of parts in spaced relation to each other which are relatively movable, a wedge interposed between said parts for controlling the amount of.v relative movement between the same, a rock arm, 'an adjustable member -mounted on the outer end of said arm to name this 31st day which the outer end of said Wedge is pivotally connected, and means foreffecti'ng adjustment of the said member to effectcorresponding adjustment of the said wedge with respect to,the said parts.

9. In means for controlling the feed of fuel to the cylinders of a multi-cylinder internal combustion engine structure the combination of rotatable cams/,operative connections bet'iveen the said cams and the fuel feeding means for operating the latter, which connections comprise a plurality of reciprocatable rods the adjoining ends of Which are disposed in spaced relation to each other and an adjustable lost motion controlling device between said ends, means for varying simultaneously the amount of'lost motion in the said connections, and means .whereby each lost motion device may beladjusted independently of the others of said devices.

In testimony that I, claim the foregoing as my invention, I have hereunto signed my of August, 1927.

OTIS D. TREIBER. 

